find(stu *p2) /*通過姓名查找查看數(shù)據(jù)的函數(shù)*/
{ char name[20];
int b=0;
printf("Enter the name of the student you want to find:"); /*通過姓名查看*/
scanf("%s",name);
while(p2!=NULL)
{if(strcmp(name,p2->name)==0)
{
printf("The data you want has be found\n");
printf(" Name:%s\t",p2->name);
printf("Num:%d\t",p2->num);
printf("sex%s\t",p2->sex);
printf("\n");
printf("Chinese:%d\t",p2->chinese);
printf("Math:%d\t",p2->mathematic);
printf("English:%d\t",p2->english);
printf("Computer:%d\t",p2->computer);
printf("\n");
b=1;
}
else if(b==0)
printf("sorry not find data!");
p2=p2->next;
}
if(b==1)
{
print();
printf("Find one\n");}
else
{print();
printf("Not find\n");
}
}
void caverage() /*求各學(xué)生語文平均分、最高和最低分成績的函數(shù)*/
{ stu *p1;
int i;
float max=0.0,min=200.0;
float sum=0.0,aver=0;
p1=head;
if(p1==NULL)
printf("not data!");
else
{for(i=0;p1!=NULL;i++,p1=p1->next)
sum+=p1->chinese;
aver=sum/i;
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
{if(max<p1->chinese)
max=p1->chinese;
}
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
if(min>p1->chinese)
min=p1->chinese;
}
printf("Chinese Average:%f",aver);
printf("Chinese Max:%f",max);
printf("Chinese Min:%f",min);
}
void maverage() /*求各學(xué)生數(shù)學(xué)平均分、最高和最低分成績的函數(shù)*/
{ stu *p1;
int i;
float max=0.0,min=200.0;
float sum=0.0,aver=0;
p1=head;
if(p1==NULL)
printf("not data!");
else
{for(i=0;p1!=NULL;i++,p1=p1->next)
sum+=p1->mathematic;
aver=sum/i;
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
{if(max<p1->mathematic)
max=p1->mathematic;
}
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
if(min>p1->mathematic)
min=p1->mathematic;
}
printf("Mathe Average:%f",aver);
printf("Mathe Max:%f",max);
printf("Mathe Min:%f",min);
}
void eaverage() /*求各學(xué)生英語平均分、最高和最低分成績的函數(shù)*/
{ stu *p1;
int i;
float max=0.0,min=200.0;
float sum=0.0,aver=0;
p1=head;
if(p1==NULL)
printf("not data!");
else
{for(i=0;p1!=NULL;i++,p1=p1->next)
sum+=p1->english;
aver=sum/i;
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
{if(max<p1->english)
max=p1->english;
}
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
if(min>p1->english)
min=p1->english;
}
printf("English Average:%f",aver);
printf("English Max:%f",max);
printf("English Min:%f",min);
}
void comaverage() /*求各學(xué)生計算機平均分、最高和最低分成績的函數(shù)*/
{ stu *p1;
int i;
float max=0.0,min=200.0;
float sum=0.0,aver=0;
p1=head;
if(p1==NULL)
printf("not data!");
else
{for(i=0;p1!=NULL;i++,p1=p1->next)
sum+=p1->computer;
aver=sum/i;
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
{if(max<p1->computer)
max=p1->computer;
}
p1=head;
for(i=0;p1!=NULL;i++,p1=p1->next)
if(min>p1->computer)
min=p1->computer;
}
printf("Computer Average:%f",aver);
printf("Computer Max:%f",max);
printf("Computer Min:%f",min);
}
update(stu *p2) /*通過姓名查找來更新數(shù)據(jù)*/
{
char name[10]; /*p2為指向結(jié)構(gòu)體struct student的指針*/
int b=0;
printf("Enter The Name"); /*輸入姓名*/
scanf("%s",name);
while(p2!=NULL)
{if(strcmp(name,p2->name)==0)
{
printf("Find you data\n");
scanf("Name:%s",p2->name);
scanf("Num:%s",p2->num);
scanf("Sex:%s",p2->sex);
scanf("Chinese:%d",p2->chinese);
scanf("Math:%d",p2->mathematic);
scanf("english:%d",p2->english);
scanf("Computer:%d",p2->computer);
printf("Success!");
b=1;}
else if(b==0)
printf("Sorry not Find data!");
p2=p2->next;}
if(b==0)
{print();
printf("Sorry not Find data!");
}
else
{
print();
printf("Finish!");
}
}
save(stu *p2) /*保留數(shù)據(jù)函數(shù)*/
{
FILE *fp;
char file[10];
printf("Enter file name"); /*輸入文件名*/
scanf("%s",file);
fp=fopen(file,"w");
while(p2!=NULL)
{
fprintf(fp,"%s",p2->name);
fprintf(fp,"%s",p2->num);
fprintf(fp,"%s",p2->sex);
fprintf(fp,"%d",p2->chinese);
fprintf(fp,"%d",p2->mathematic);
fprintf(fp,"%d",p2->english);
fprintf(fp,"%d",p2->computer);
p2=p2->next;
}
fclose(fp);
}
char password[7]="123456"; /*定義初始密碼*/
void main() /*主函數(shù)*/
{ int choice;
stu *p2;
char s[8];
int flag=0,i; /*標(biāo)志項*/
int n=3;
do{ printf("Enter password:\n");
scanf("%s",s);
if(!strcmp(s,password)) /*進行密碼匹配驗證*/
{ printf("PASS\n\n\n");
flag=1;
break;
}
else{
printf("Error Enter again:\n");
n--;
}
}
while(n>0);
if(!flag)
{printf("you have Enter 3 times!"); /*輸入密碼超過了3次！！*/
exit(0); /*自動退出*/
}
/*密碼驗證成功后進入的界面*/
printf("~~~~~~~~~~\t\t\t~~~~~~~~~~~~\n"); /*操作界面*/
printf("\t\tWelcom to the Mis\n");
printf("Author:-----\tClass:------\tNum:------\n"); /*作者，班級和號碼*/
printf("Adress:HG\n"); /*地址*/
printf("%%%%%%%%%%%%%%%%%%%%%%%%%%%\n");
printf("\t\tEnter OP:\n");
printf("\n\n\n\n");
printf("==============\t\t==============\n");
printf("==============\t\t==============\n");
printf("\t\tEnter the MIS yes or no\n"); /*問進入系統(tǒng)與否*/
scanf("%d",&choice);
if(choice=='n'||choice=='N')
exit(1);
print();
while(1)
{
printf("Enter choice:");
scanf("%d",&i);
if(i<1||i>13)
{
printf("Enter num from 1 to 13:\n"); /*再從1-13中進行選擇*/
exit(1);
}
switch(i)
{ case 1:
p2=cindata(); /*其他數(shù)據(jù)是否繼續(xù)輸入的函數(shù)*/
break;
case 2:
p2=lookdata(head); /*查看數(shù)據(jù)的函數(shù)*/
break;
case 3:
insert(); /*通過比較學(xué)號來插入數(shù)據(jù)的函數(shù)*/
break;
case 4:
find(head); /*通過姓名查找查看數(shù)據(jù)的函數(shù)*/
break;
case 5:
update(head); /*通過姓名查找來更新數(shù)據(jù)*/
break;
case 6:
save(head); /*保留數(shù)據(jù)函數(shù)*/
break;
case 7:
print(); /*顯示或打印函數(shù)*/
break;
case 8:
caverage(); /*求各學(xué)生語文平均分、最高和最低分成績的函數(shù)*/
break;
case 9:
maverage(); /*求各學(xué)生數(shù)學(xué)平均分、最高和最低分成績的函數(shù)*/
break;
case 10:
eaverage(); /*求各學(xué)生英語平均分、最高和最低分成績的函數(shù)*/
break;
case 11:
comaverage(); /*求各學(xué)生計算機平均分、最高和最低分成績的函數(shù)*/
break;
case 12:
; /*空操作*/
case 13:
exit(1); /*退出*/
break;
}
scanf("%d",&i);
}
}
